There are many methods of birth control that are harmful to the body. Here are some of the methods I would not recommend:
Natural method of birth control system
CONTRACEPTIVE PILLS, which are steroids, act to prevent ovulation and are almost 100% effective, but have many side effects and are harmful to the body.
SPERMICIDES, in the form of foam, placed in the vagina before the intimate relationship, act by killing the spermatozoa and are harmful to the body.
IUDs are intrauterine devices are objects of plastic or metal (usually copper) placed in the cervix. They act by preventing the fertilized egg from attaching to the wall of the uterus. These are foreign objects inside the body and the body often rejects the IUD causing side effects.
DIAPHRAGMS are dome-shaped rubber pieces with a spring around the edge. It is placed inside the vagina to cover the cervix and should be used in conjunction with a chemical spermicidal.
TROMPA LIGATURE is a surgical procedure in which the fallopian tubes are cut and the cut ends are knotted. This method of sterilization is safe but virtually irreversible and causes many problems since monthly it is impossible to eliminate the eggs in normal form through the vagina and must be absorbed by the bloodstream and virtually eliminated by the kidneys.
VASECTOMY is to cut the vas deferens and tie each tip to prevent sperm from travelling from the testicles to the urethra. This method of sterilization is also safe but can also lead to problems.
A form of birth control that is not natural, and at the same time does not cause harm to the body is the condom. They are made of rubber or animal membrane. I do not recommend the use of animal membrane. It is a highly reliable means of prevention.
NATURAL CONTROL METHODS NATAL
THE METHOD OF THE RHYTHM
Over the years this method has proven to be safe in only 60-80%. Ovulation occurs approximately 2 weeks before the next cycle. The average is 14 days, but may occur 12-16 days before the next cycle. If you had a record of your previous cycles for 12 months (the more the better) you can determine if you have a 28 day cycle, or if it is longer or less than 28 days. Then count back 14 days from the start of menstruation and that is the date of ovulation when a pregnancy can occur.
In order for a pregnancy to occur, a live and fresh sperm from man must meet and fertilize a woman’s living egg. This only happens in the few fertile days of the cycle of women. Pregnancy can be done if there is a sexual relationship on the exact date of ovulation, or in a period of up to 72 hours before ovulation. The sperm usually lives 2 or 3 days (possibly up to 5 under ideal conditions). Considering that the ovum can survive for 12 to 24 hours, a person should abstain for 24 hours after ovulation. To avoid unwanted pregnancy, a couple should abstain for 3 days before ovulation and one day after. (See attached table). This method would also be simple if we could specify the exact date of monthly ovulation. But since we can only calculate the approximate date, we must provide extra time to compensate for errors. Diseases, travels, worries, excitations, etc., can occasionally cause an irregular cycle in most women, and often for some others.
The researchers found that there were a greater number of pregnancies between early winter and early spring (October to March). The most fruitful month is November (Births Medical Journal, 297: 1309-10)
THE METHOD OF MOCO CERVICAL
In women, there is permanently a secretion of cervical mucus, made by special cells inside the cervix and changes characteristics throughout the cycle. You will have noticed this normal elimination and you have wondered why in some epochs it is so profuse and in another almost nonexistent. You will find this mucus in the vaginal opening – you do not need to check the inside.
At the beginning and end of the cycle (the safe time) when the estrogens hormone is low, the estrogens is little sticky and opaque with cellular matter. Mid-cycle (unsafe time) changes the type of fertile mucus. As the level of estrogens increases, preparing for ovulation, the amount of mucus increases. It becomes more watery and milky in appearance. Then with more estrogens it becomes even clearer and more watery at the highest level of estrogens just prior to ovulation, it becomes smooth and glassy and you can stretch the mucous thread between your index fingers and your thumb without breaking it.
This fertile period, usually the mucus has multiplied 10 times in quantity. This abundant fertile mucus is of help to the spermatozoon. It nourishes it, guides them up through the fibrous channels and protects them from the acidic pH of the vagina (mucus is alkaline).
After ovulation the hormone progesterone causes the mucus to become infertile in one or two days. Progesterone inhibits the mucus-producing cells of the cervix and again the mucus becomes thin, thick and sticky, and an opaque or yellow target for cellular matter and protein content.
After the fertile time, the mucus will return to dry and sticky type. NOTE: Check the mucus at times when you will not have a sexual relationship since it will cause the secretion of lubricating mucus that is not the same as the cervical mucus.
THE VASAL BODY TEMPERATURE METHOD
A reproductive hormone released after ovulation causes the body temperature to raise several tenths of a degree above what it was before ovulation. To avoid pregnancy, the safest time for sex is after being sure that ovulation has already taken place. It will have a relatively low temperature from the date of its cycle until it has ovulated. Ovulation will cause an increase of about 6/10 of 1 degree. This increase can occur in one day or can be done gradually over several days. After registering 4 consecutive days with the temperature higher than the normal temperature then it is a safe period.
You should remember that 5 days before ovulation, when the temperature is normal is an unsafe period because the sperm can live up to 5 days.
If you want the most absolutely sure method, the most infallible of natural birth control, you will have sex only in the last part of the cycle (after rising temperature for 4 consecutive days) until the onset of menstruation. Being the time of risk from the menstruation until the ovulation.
Take your temperature at a set time each morning when you wake up, if you sleep late, your temperature may show a false increase. Use the basal thermometer, which measures one tenth of a degree instead of two tenths of a degree as on a normal thermometer. You should take your rectal or vaginal and non-buccal temperature since the previous ones are more precise. A very important aspect of this method is to keep accurate records.